Supplier Profile
Zhejiang Datong Construction Technology Co., Ltd.
浙江大通建设科技有限公司
Zhejiang Datong Construction Technology Co., Ltd. specializes in low-disturbance reinforcement and rehabilitation of shield tunnels in soft ground. With the TJS radial soil-cement pile reinforcement method as a core technology and strategic development focus, the company also delivers MJS, TRD/TAD, and IMS solutions for deep excavations, groundwater cutoff, and ground improvement.
浙江大通建设科技有限公司专注于软土地层盾构隧道微扰动加固与病害治理，以 TJS 径向水泥土桩加固技术为核心技术和重点发展方向，同时提供 MJS、TRD/TAD、IMS 等深基坑围护、止水及地基加固解决方案。
Zhejiang Datong Construction Technology Co., Ltd.
Overview
Company profile
Founded in 2002 and based in Hangzhou, Zhejiang, Zhejiang Datong Construction Technology Co., Ltd. is a high-tech enterprise focused on deep-excavation support technologies and low-disturbance equipment and methods for reinforcement from inside shield tunnels. The company develops and applies new construction methods, specialized equipment, and process-control technologies for underground infrastructure, with an emphasis on green, energy-efficient, and environmentally responsible project delivery.
The TJS radial soil-cement pile reinforcement method is a core technology and strategic development focus of Datong. Developed in response to the need for disaster prevention and defect treatment in urban rail transit through soft ground, the method is designed to control settlement, convergence deformation, horizontal displacement, leakage-related risks, and surrounding-ground instability in operating and newly built shield tunnels.
TJS uses specialized equipment inside the tunnel to construct soil-cement reinforcement bodies of different angles, lengths, and diameters outside the lining with high efficiency and low disturbance. Vertical, horizontal, inclined, and circumferential reinforcement can be combined to form a 360-degree treatment system. Together with existing grouted zones and reinforced ground outside the tunnel, the reinforcement bodies form a composite foundation supporting tunnel deformation control and long-term stability.
The TJS system integrates small-diameter drilling through existing segment lifting holes or reserved openings, sealed blowout prevention, high-pressure jet grouting, forced slurry discharge, in-ground pressure balancing, intelligent process monitoring, and slurry recovery. Its equipment and drill-rod system have been progressively adapted to restricted tunnel clearances and short operating windows, enabling specialized reinforcement in both operating tunnels and tunnels under construction.
In addition to TJS, Datong delivers MJS all-directional high-pressure jet grouting, TRD equal-thickness soil-cement walls, TAD precast assembled diaphragm walls, and IMS low-disturbance soil mixing. The company has participated in excavation-support, groundwater-cutoff, and ground-improvement works for infrastructure projects in Hangzhou, Ningbo, Shaoxing, Shanghai, Nanjing, Suzhou, Kunming, Wuhan, Zhengzhou, Xiong'an, Harbin, and other cities.
公司简介
浙江大通建设科技有限公司创建于 2002 年，位于浙江杭州，是一家以深基坑围护技术研发、盾构隧道洞内微扰动加固装备与技术为核心的高新技术企业。公司坚持绿色、节能、环保的技术方向，面向地下基础设施持续开展新工法、专用装备和施工控制技术的研发与工程应用。
软土地层盾构隧道径向水泥土桩加固技术（TJS 工法）是浙江大通的核心技术和重点发展方向。该技术针对软土地区城市轨道交通设施灾变预防和病害治理需求研发，主要用于控制运营隧道及在建盾构隧道的沉降、收敛变形、水平位移、渗漏相关风险及周边土体失稳问题。
TJS 工法在隧道内采用专用设备，以高效、微扰动方式向隧道外施工不同角度、长度和直径的水泥土增强体。竖直、水平、倾斜及环向加固可组合形成 360°全方位加固体系，并与隧道外既有注浆体及加固地层共同形成复合地基，为隧道变形控制和长期稳定提供支撑。
TJS 系统集成了既有管片吊装孔或预留孔小孔径钻进、密封止喷、高压喷射注浆、强制排浆、地内压力平衡、智能施工监测及泥浆回收等技术。装备及钻杆系统持续面向狭小隧道空间和有限运营窗口进行迭代，可在运营隧道和在建隧道内实施专项加固施工。
除 TJS 工法外，公司还开展 MJS 全方位高压喷射注浆、TRD 等厚水泥土连续墙、TAD 预制装配式地下连续墙及 IMS 微扰动搅拌等专业施工，先后在杭州、宁波、绍兴、上海、南京、苏州、昆明、武汉、郑州、雄安、哈尔滨等地参与基础设施基坑围护、止水与地基加固工程。
Core Capabilities
Diagnosis, reinforcement design, and specialized construction for operating and newly built shield tunnels
运营及在建盾构隧道病害诊断、加固方案设计与专项施工
Integrated TJS equipment and 360-degree radial soil-cement reinforcement from inside tunnels
TJS 洞内 360°全方位径向水泥土增强体施工及成套装备集成
Small-diameter drilling through existing segment lifting holes or reserved openings
利用既有管片吊装孔或预留孔实施小孔径钻进
Sealed blowout prevention, forced slurry discharge, in-ground pressure balancing, and low-disturbance control
密封止喷、强制排浆、地内压力平衡及全过程微扰动控制
Vertical, horizontal, inclined, and circumferential reinforcement layouts tailored to tunnel conditions
根据隧道条件定制竖直、水平、倾斜及环向组合加固方案
Real-time process-data acquisition, cloud monitoring, intelligent alerts, and dynamic adjustment of grouting parameters
施工参数实时采集、云端监控、智能预警与注浆参数动态调节
Slurry collection, treatment, solidification, and recycling for controlled tunnel operations
泥浆收集、处理、固化及循环利用
MJS, TRD/TAD, and IMS delivery for excavation support, groundwater cutoff, and ground improvement
MJS、TRD/TAD、IMS 等深基坑围护、止水和地基加固工法实施
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Supplier Offerings
Products, services, systems, and solutions from this supplier
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PROFESSIONAL SERVICES
TJS Radial Soil-Cement Pile Reinforcement for Shield Tunnels in Soft Ground
软土地层隧道径向水泥土桩加固技术（TJS工法）
Zhejiang Datong's flagship Tunnel Jet System (TJS) integrates 360-degree directional radial jet grouting, pressure-balanced slurry discharge, intelligent grouting monitoring, and slurry recovery for low-disturbance reinforcement of ground surrounding shield tunnels. It is designed for settlement and convergence treatment in soft-ground tunnels, including operating metro systems with restricted access and maintenance windows.
TJS工法是浙江大通重点研发的盾构隧道洞内微扰动加固技术与成套装备。系统集成360°多方向径向旋喷加固、强制排浆与地内压力控制、智能注浆监测及泥浆回收，适用于软土地层运营隧道的沉降、收敛变形和周边土体加固治理。
PROFESSIONAL SERVICES
MJS All-Directional High-Pressure Jet Grouting
MJS全方位高压喷射注浆工法
MJS (Metro Jet System) combines high-pressure jet grouting with forced in-hole slurry discharge and in-ground pressure monitoring. By regulating slurry discharge during ground treatment, it limits construction-induced disturbance and supports ground improvement near existing metro tunnels, beneath overhead power lines, and at other constrained or sensitive sites.
MJS（Metro Jet System）全方位高压喷射注浆工法，将高压喷射注浆、孔内强制排浆与地内压力监测相结合，通过调节排浆量控制施工扰动，适用于既有地铁邻近、高压线下方及其他空间受限、环境敏感条件下的地基加固。
PROFESSIONAL SERVICES
TRD Equal-Thickness Soil-Cement Wall and TAD Precast Assembled Diaphragm Wall
TRD等厚水泥土连续墙与TAD预制装配式地下连续墙
TRD forms an equal-thickness soil-cement wall by vertically cutting and horizontally advancing a chain-equipped cutter box while mixing grout with the in-situ ground. TAD adds prestressed tongue-and-groove precast reinforced-concrete panels to create an assembled diaphragm wall combining earth retention and groundwater cutoff.
TRD工法通过切割箱纵向切割、横向推进及原位水泥浆搅拌形成等厚水泥土连续墙；TAD工法进一步在水泥土墙内插入预应力榫卯式钢筋混凝土预制墙板，形成兼具挡土与止水功能的装配式地下连续墙。
PROFESSIONAL SERVICES
IMS Low-Disturbance Soil Mixing Method
IMS微扰动搅拌工法
IMS is a low-disturbance soil-mixing method for underground-space development and ground improvement in sensitive environments. It is designed to achieve the required treatment quality while reducing the effects of equipment load and construction disturbance on nearby waterways, revetments, and existing structures.
IMS工法是一种面向敏感环境地下空间开发和地基加固的微扰动搅拌技术，通过专用施工方法在保证加固质量的同时降低设备荷载和施工扰动对邻近河道、驳岸及既有结构的影响。
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